Cisco Prisma II bdr Dig Rev 2 1 Dual Mux Sys for High Density Installations Guida All'Installazione
1-4
Introduction
78-715192-01 Rev C
Overview of the bdr Transmit Processor,
Continued
Transmitter Block Diagram
A block diagram of the Prisma II bdr 2:1 Redundant Transmit Processor with two
Prisma II bdr Transmitter sub-modules is shown below.
0 to 10 dB
Variable
Attenuator
A/D
TDM
Mux
0 to 10 dB
Variable
Attenuator
A/D
RF Input A
A/D Input T.P.
-20 dB
RF Input B
A/D Input T.P.
-20 dB
Primary
Secondary
Data Input
Optical Output
Transmitter
Sub-module
Laser
Driver
DFB
Laser
Transmitter
Sub-module
Laser
Driver
DFB
Laser
Data Input
Optical Output
Data
Outputs
2.5 Gbps
Transmit
Processor